Gas-engine ignition-dynamo.



PATENTED DEC. 20, 1904.

J. REEK. GAS ENGINE IGNITION DYNAMO.

APPLIOATION FILED MAIL16, 1903.

N0 MODEL.

1. V VENTOR WITWESSES fltiorneys.

UNITED STATES Patented December 20, 1904.

PATENT @FFICE.

JOHN REEK, OF CAMDEN, MICHIGAN, ASSIGNOR TO THE ALAMO MANU- FACTURING COMPANY, OF HILLSDALE, MICHIGAN.

GAS-ENGINE lGNlTlON-DYNAIVIO.

SPECIFICATION forming part of Letters Patent No. 778,146, dated December 20, 1904.

Application filed March 16, 1903. Serial No. 147,881.

To (DZ/Z 1072/0777, it 77LCLZ/ concern:

Be it known that I, JOHN REEK, a citizen of the United States, residing at Camden, county of Hill sdale, State of Michigan, have invented a certain new and useful Improvement in Gas- Engine Ignition-Dynamos; and I declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to whichit pertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification.

This invention relates to gas-engine ignitiondynamos; and the object of the invention is to so construct the mounting of a dynamo and to so connect it with the source of power by which it is actuated that it shall produce a substantially constant voltage without employing special governing mechanism.

In the drawings, Figure 1 shows the dynamo in perspective with the driving-wheel of the armature in frictional contact with the balance-wheel of an engine. Fig. 2 is a reversed or bottom plan of the dynamo-base. Fig. 3 is a sectional detail of a part of the base.

The dynamo A may be of any selected form best adapted to the purpose of producing the requisite number of watts for the desired spark. It receives its motive power through the small driving-Wheel B, that is fixed to the armature-shaft and is arranged to be driven by frictional contact with the balance-wheel C of the internal-combustion engine.

The dynamo is mounted pivotally on a base and is arranged to swing on a frame F to bring its driving-wheel B into a frictional contact of any desired tension with the balance-wheel C.

The baseD is made separate from the main frame of the dynamo, and in the base there is a ball-race e of comparatively large diameter, and on the frame F of the dynamo is a correspon ding ball-racef, arranged to register with the ball-race in the base D. In the assembled machine the space between the two races contains a number of bearing-balls a.

g is an aperture through a part of the base D, through which aperture the balls may be inserted into the races 0 and f, thus binding 'to generate the desired watts.

the frame F to the base D and forming a swivel-joint.

A spring 7) is made fast to the d ynamo-frame and is provided with an adjustable tensionscrew C, which engages through a fixed holding-point in the base D. By means of the screw the tension of the spring 7) can be adjusted as may be desired.

The dynamo is mounted with respect to the engine so that the driving-wheel B is in frictional contact with the balance-wheel C of the engine and is drawn against the balance-wheel C by the spring I) with sufficient force to cause the armature B to rotate at the proper speed In determining this the relative size of the wheel C and the wheel B are taken into consideration. The 6 5 wheel B is made in the first instance of a size proper to produce the rotation necessary for the generation of a current of the desired number of watts when the wheel C is running at a slow rate of speed. Such a speed will be given 7 to the balance-wheel when the engine is started by manual rotation of the parts. If new when the parts are in proper adjustment the speed of the wheel C increases, tending to increase the speed of the wheel B, and consequently tending to undesirably increase the output of the dynamo, the peripheral velocity of the wheel B will not increase with that of the wheel C; but as I have found from experimental observation it causes the small wheel to 30 swing a short distance away from the wheel C. thereby preventing any increase of the speed of rotation of the small wheel and causes the output of the dynamo to remain very nearly constant. and the amount of the output of the 5 dynamo in watts can be easily regulated by adjusting the tension of the spring Z). IVith the roller-bearings the rollers contact their ways in points or lines which are very small, and therefore allow a slight resilient motion 9 under the impulse of the fly-wheel.

What I claim is 1. In a gas-engine, the combination of a rotating iiywheel, a dynamo, an armature in said dynamo, a friction-wheel secured at one end of said armature, said dynamo being pivoted so as to turn in a plane at an angle with the plane of rotation of said fly-wheel to bring said friction-wheel against and away from the periphery of the fly-wheel, and a spring acting to turn the dynamo to bring the friction-wheel into contact with the periphery of the fiy-wheel, the tension of said spring being such that the engagement between the flywheel and the friction-wheel shall be suflicient so that the two shall move together at slow speed and shall be broken automatically at a predetermined speed limit of rotation of the armature.

2. In combination with the balance-Wheel of an explosive-engine, a dynamo mounted upon a roller bearing so as to turn about an axis at right angles to the axis of the armature, a friction-wheel upon the armature-shaft eccentric to the axis about which the dynamo is adapted to turn, said dynamo being so located with reference to said balance-wheel that its turning shall press said friction-wheel against the outside of said balance-Wheel, and a spring adjusted to turn the dynamo to hold the friction-wheel against the periphery of the balance-wheel with a force sufficient to produce the necessary friction at slow speed and that shall yield at a speed of rotation adapted to furnish predetermined maximum current.

3. In combination with the balance-wheel of an explosive-engine, a dynamo-base, an internal opening in said base, the boundingwall of said opening being provided with a ball-race, a dynamo having a frame provided with a ball-race adapted to register with the ball-race in the base, balls in said races, a friction- Wheel on the armature of said dynamo at one side of the axis of rotation of said dynamo, means for holding the frictionwheel in yielding engagement with the balance-wheel, and means for regulating the tension of the yielding engagement.

4. In combination with the balance-wheel of an explosive-engine, a dynamo-base having an internal opening, the bounding-wall of said opening being provided with a ballrace, a dvnamo having a frame provided with a ball-race adapted to register with the ballrace in the base,-an opening through the base for the passage of balls, balls in said races, a friction-wheel on the armature of said dynamo at one side of the axis of rotation of said dynamo, a spring engaging at one end with the dynamo-base and at the other end with the frame at a point eccentric to said frame, and means for adjusting the tension of said spring whereby the friction-wheel shall be held in an adjustable yielding engagement with the balance-wheel.

In testimony whereof I sign this speciliczk tion in the presence of two witnesses.

JOHN REEK.

Witnesses:

LOTTA LEE HAYTON, ELLIOTT J. STODDARD. 

